>> ifill: one lawmaker's change of heart: virginia senator mark warner, an n.r.a. supporter, now says "enough is enough." year from gun violence, if we can cut that number in half, if we can cut that number by 20%, if we can cut that number by 10%, we save thousands of lives. >> woodruff: plus, neighbors and friends in newtown are searching for a way to turn the horror of friday's killings into something positive for their community. hari sreenivasan has our conversation. >> ifill: kira kay reports on an election to watch in india, where the leading candidate for chief minister of one state, narendra modi, is both loved and loathed. >> for all of modi's popularity, he is also one of the most polarizing figures in india today, despised by many for a period of vicious communal violence that happened on his watch.